/**
* If tax value differs tax which is setted on magento,
* apply Google tax and recollect quote
*
* @param Varien_Object $qAddress
* @return string | false
*/
protected function _applyCustomTax($qAddress)
{
$quote = $qAddress->getQuote();
$qTaxAmount = $qAddress->getBaseTaxAmount();
$newTaxAmount = $this->getData('root/order-adjustment/total-tax/VALUE');
if ($qTaxAmount != $newTaxAmount) {
$taxQuotient = (int) $qTaxAmount ? $newTaxAmount / $qTaxAmount : $newTaxAmount;
$qAddress->setTaxAmount($this->_reCalculateToStoreCurrency($newTaxAmount, $quote));
$qAddress->setBaseTaxAmount($newTaxAmount);
$grandTotal = $qAddress->getBaseGrandTotal() - $qTaxAmount + $newTaxAmount;
$qAddress->setGrandTotal($this->_reCalculateToStoreCurrency($grandTotal, $quote));
$qAddress->setBaseGrandTotal($grandTotal);
$subtotalInclTax = $qAddress->getSubtotalInclTax() - $qTaxAmount + $newTaxAmount;
$qAddress->setSubtotalInclTax($subtotalInclTax);
foreach ($quote->getAllVisibleItems() as $item) {
if ($item->getParentItem()) {
continue;
}
if ($item->getTaxAmount()) {
$item->setTaxAmount($item->getTaxAmount() * $taxQuotient);
$item->setBaseTaxAmount($item->getBaseTaxAmount() * $taxQuotient);
$taxPercent = round($item->getTaxAmount() / $item->getRowTotal() * 100);
$item->setTaxPercent($taxPercent);
}
}
$grandTotal = $quote->getBaseGrandTotal() - $qTaxAmount + $newTaxAmount;
$quote->setGrandTotal($this->_reCalculateToStoreCurrency($grandTotal, $quote));
$quote->setBaseGrandTotal($grandTotal);
$message = $this->__('The tax amount has been applied based on the information received from Google Checkout, because tax amount received from Google Checkout is different from the calculated tax amount');
return $message;
}
return false;
}
